class Phone:
    def __init__(self, cpu, screen):
        self.cpu = cpu
        self.screen = screen


class CPU:
    def calc(self):
        print("超速运算")


class Screen:
    def display(self):
        print("亮瞎你的钛合金")


p = Phone(CPU(), Screen())
p.cpu.calc()
p.screen.display()
